Free 3D Modeling Software - 3D Printing: Build your Own 3D Printer and Print your own 3D Objects - page 120

space. Notice in Figure 6.21 that as you drag, you'll see a changing value that
indicates how far above or below the object is relative to the flat work surface.
(You'll also notice a shadow effect below the object that lets you know it's floating
up higher.)
Figure 6.21 Use the height value to determine the proper raising and lowering of
an object.
With one object above the other, you can use the Align feature to stack them per-
fectly. First, select both objects so you can view the control dots (refer back to
Figure 6.18 ) . Notice in Figure 6.22 that the workspace is rotated so you are look-
ing slightly down on the two objects. Hovering the mouse over the specified dot
will show you what the stacked objects will look like. If you like it, click the dot
to make the change.